Boy, can I relate! Mine are 19 and 17 and my new husband and I are ttc. I am 43 and don't know what is going on with me either. I usually go 25 days but the last two cycles were 21 and 16 days. I am now on day 33 and no AF! I have tested 3 times and all are negative. I am very nauseous in the mornings only and have NO other signs of pregnancy. I feel heavy and crampy and have occasional ovarian pains as well. But I have no spotting and my temps are low (but they always are). I don't feel pregnant but it doesn't feel like AF coming either. I am so hoping I am not having a menopausal month. I am not ready for that as we really want to have a baby (my husband has no children from his first marriage). What a rollercoaster ride! <IMG SRC="http://www.healthboards.com/ubb/biggrin.gif">